State law differs regarding DBA publication. Generally speaking, when publication is required, the DBA statement must be published once a week, in a specific newspaper that posts legal notices, for four consecutive weeks. Publication is included in the LegalZoom filing process.
If you are not having a period or you are having an irregular cycle, you can still get pregnant because ovulation occurs before your period, and ovulation can restart at any time. Young women can even become pregnant before their first period. There are no concrete physical signs of ovulation, so you could be ovulating and not know it.
For women with regular cycles between 26-32 days it is much easier to simply know that you can get pregnant as early as day 8 of your cycle and as late as day 19 of your cycle and on all the days in between. If you have intercourse often during this time, you have an extremely high probability of getting pregnant.